Method
Grill the jicama until lightly marked but still crisp.
Let the jicama cool, then dice it into small pieces.
Combine the jicama, mango, cilantro, and jalapeño in a mixing bowl.
Add the lime juice and salt.
Toss gently and serve.
Notes
Remove the jalapeño seeds for a milder salsa; refrigerate leftovers in a covered container for up to 2 days.